Main body of spray gun



FIG. 1 is a front view of the main body of spray gun showing my new design;

FIG. 2 is a rear view thereof;

FIG. 3 is a left plan view thereof;

FIG. 4 is a right plan view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a bottom view thereof;

FIG. 7 is a perspective view of the main body of spray gun showing my new design thereof; and,

FIG. 8 is a perspective view of the spray gun showing the other parts combining with my present design.

The broken lines are shown for illustrative purposes only and form no part of the claimed design. 

The ornamental design for the main body of spray gun, as shown and described. 